Choose your Account Type as POP or IMAP, if unsure choose “IMAP”.
Enter both the incoming & outgoing Mail Server addresses as mail. followed by your domain name (e.g. if your domain is example.com you would enter mail.example.com)

If prompted for your Username enter your full email address
Incoming Mail Server Info
Leave the Port as Auto and remove the tick from ‘Use SSL’
For Authentication choose Password